'Babe, I'm not doing this – I can't': Woman refuses to shoot boyfriend in recording of fatal stunt

A pregnant woman tried to resist as her boyfriend urged her to shoot him for a videotaped-stunt that ended in his death, according to a recently released transcript.

On Friday, the Norman County prosecutor also released portions of the video Pedro Ruiz III took with his girlfriend, Monalisa Perez, at their home in Halstad, Minnesota, last year.

Ruiz, 22, shows off the .50-calibre Desert Eagle handgun and the bullet he wanted Perez to fire at him as he held a hardcover encyclopaedia against his chest. The couple planned to post the video on YouTube.

Pedro Ruiz, 22, shows off the .50-caliber Desert Eagle handgun he plans to use in the stunt. (Supplied)The idea was for Monalisa Perez to shoot her boyfriend who would have an encyclopaedia to block the bullet. (Supplied)

In the video, Ruiz calls himself "the crazy Pedro" and said he wanted to see if a .50-calibre bullet can go through a book.

"The most trustworthy person that I trust in this world is my girlfriend, Monalisa," Ruiz said in the video.

"So if I die, I'm pretty much ready to go to heaven right now".

The bullet went through the book and killed Ruiz. Picture: Supplied (Supplied)

According to the transcript, Perez pleads with her boyfriend, "I can't do it, babe. I'm so scared".